WO2019237886A1

WO2019237886A1 - Voice diaphragm and loudspeaker

Info

Publication number: WO2019237886A1
Application number: PCT/CN2019/087529
Authority: WO
Inventors: 陈浩
Original assignee: 瑞声声学科技(深圳)有限公司
Priority date: 2018-06-15
Filing date: 2019-05-20
Publication date: 2019-12-19
Also published as: US20190387323A1; US10869130B2; CN208337867U

Abstract

Disclosed are a voice diaphragm and a loudspeaker having the voice diaphragm. The voice diaphragm comprises a bent ring part, a fixing part extending outwards from the outer edge of the bent ring part, and a middle part extending inwards from the inner edge of the bent ring part; reinforcing ribs are provided on the bent ring part; the reinforcing ribs extend from the bent ring part over the inner edge of the bent ring part to the middle part; the loudspeaker comprises the voice diaphragm; because the reinforcing ribs provided on the bent ring part extend to the middle part, the interior of the bent ring part is increased, and especially the strength of a corner part is improved. The problem of the poor strength of the bent ring part in the actual use process can be solved, and the stability and the pure tone of the voice diaphragm are improved.

Description

Sound film and speakers

Technical field

The utility model relates to the technical field of speaker components, in particular to a sound film and a speaker using the sound film.

Background technique

With the rapid development of electronic information technology, loudspeaker components are widely used in various electronic products, especially in the most widely used mobile communication equipment. People not only demand miniaturization, multi-function, but also the quality of their voice effects, Distortion and stability put forward higher requirements. Generally, the loudspeaker component includes a vibration system, a magnetic circuit system, and a protective casing. The vibration system includes a voice coil suspended in a magnetic gap and a voice film connected to and driven by the voice coil. As the core component of the speaker, the sound film design directly affects the performance of the acoustic device.

The related art sound film includes a folded ring portion, a fixed portion formed by extending an outer edge of the folded ring portion outward, and a middle portion formed by extending an inner edge of the folded ring portion inward. The folding ring portion is provided with a plurality of reinforcing ribs. Conventional reinforcing ribs extend along the outer edge of the folding ring portion to the inner edge of the folding ring portion, and there is a certain gap between the inner and outer edges of the folding ring portion. This structure often causes the strength of the folded ring portion, especially the corner portion, to be poor, which is easy to be discounted during vibration, which is not conducive to maintaining the balance of the sound film when it vibrates, and affects the pure sound and performance of the speaker.

Therefore, it is necessary to provide a new sound film and a speaker using the same. Increase the strength of the inside of the folding ring to improve the pure tone and stability issues.

technical problem

The object of the present invention is to provide a sound film capable of increasing the internal strength of the folded ring portion and improving the vibration smoothness, distortion, and strength in response to the above-mentioned problems existing in the prior art.

Technical solutions

The object of the present invention can be achieved by the following technical solutions: a sound film, which includes a folded ring portion, a fixed portion formed by an outer edge of the folded ring portion extending outward, and an inner edge of the folded ring portion A middle portion formed by extending inward, the folding ring portion is provided with a plurality of first reinforcing ribs, and the first reinforcing rib extends from the folding ring portion to the intermediate portion beyond an inner edge of the folding ring portion.

Preferably, the first reinforcing rib is symmetrical about the center of the sound film.

Preferably, a distance between two adjacent first reinforcing ribs gradually increases from the intermediate portion toward the fixed portion.

Preferably, the protruding direction of the first reinforcing rib is the same as that of the folded ring portion.

Preferably, the middle portion is provided with a through hole penetrating therethrough, the sound film further includes a reinforcing plate attached to the middle portion and covering the through hole, and the first reinforcing rib extends to the reinforcement The edge of the board.

Preferably, the folded ring portion includes two long axis sides opposite to each other, two short axis sides opposite to each other, and a corner portion connecting the adjacent long axis sides and the short axis sides, and the first reinforcing rib is located at Mentioned corners.

Preferably, the number of the first reinforcing ribs in each corner portion is equal and symmetrical about the center of the corner portion.

Preferably, a plurality of second reinforcing ribs and a third number of reinforcing ribs equal to the number of the second reinforcing ribs are provided on a long axis side and / or a short axis side of the folded ring portion, and the second reinforcing ribs are connected with all the second reinforcing ribs. The third reinforcing ribs are all arc-shaped and the bending direction of the second reinforcing ribs is opposite to the bending direction of the third reinforcing ribs.

Preferably, the long second reinforcing rib and the third reinforcing rib are arranged symmetrically with respect to the center of the axial side where the third reinforcing rib is located.

Beneficial effect

The utility model also provides a speaker, which includes the sound film as described above.

Since the ribs provided on the folded portion of the sound film extend to the middle portion, the strength of the inside of the folded portion, especially the corner portion, is increased. It can improve the problem of poor strength of the folded ring during actual use, and improve the sound film stability and pure sound.

BRIEF DESCRIPTION OF THE DRAWINGS

1 is a schematic diagram of a three-dimensional structure of a sound film provided by the present invention;

FIG. 2 is a partially enlarged view of the area A in FIG. 1; FIG.

Embodiments of the invention

The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

As shown in FIG. 1, the sound film 100 provided by the present invention includes a middle portion 1, a folding ring portion 2 provided around the outside of the intermediate portion 1, and a fixing portion 3 provided on the outside of the folded ring portion 2. 2 includes an inner edge 21, a middle connecting portion 22, and an outer edge 23. In the perspective of FIG. 1, the middle portion 1, the folding ring portion 2 and the fixing portion 3 together form a generally rectangular sound film. The sound film may also have a shape other than a rectangle, such as a circle or an oval.

Specifically, the middle portion 1 may be a flat plate structure, or may be an arcuate structure with a cross section that is convex upward or concave downward, and a through hole penetrating therethrough may also be provided in the middle portion. A reinforcing plate covering the through hole is attached, and the first reinforcing rib extends to an edge of the reinforcing plate. In this embodiment, the middle portion 1 is a flat plate-like structure having a rounded rectangle.

The folded ring portion 2 can be set as an upward protrusion or a downward depression, and can also be provided with a plurality of upward protrusions or a plurality of downward depression structures, that is, a multi-stage folded ring.

In this embodiment, the folded ring portion 2 has a rounded rectangle, and includes two long-axis sides 24 arranged symmetrically, two short-axis sides 25 arranged symmetrically, and four connecting the adjacent long-axis sides and short-axis sides. The corner portion 26 and the edge portion of the folded ring portion include an inner edge 21 connected to the inner middle portion 1 and an outer edge 23 connected to the outer fixed portion 3. The middle connecting portion 22 is convex upward, and the inner edge 21 and the outer edge 23 are rounded rectangles.

The folding ring portion 2 is provided with a plurality of reinforcing ribs to increase the strength of the folding ring portion and improve the stability of the sound film. Generally, in order to balance the vibration region of the sound film, the ribs are symmetrically and uniformly distributed on the folded ring portion. In this embodiment, the reinforcing ribs include a first reinforcing rib 4, a second reinforcing rib 5, and a third reinforcing rib 6, and the distribution state of the reinforcing ribs on the folding ring portion 2 can be adjusted according to requirements. The first reinforcing ribs 4 The folded ring portion 2 extends beyond the inner edge 21 of the folded ring portion to the intermediate portion 1.

The first reinforcing ribs are symmetrical with respect to the center of the sound film 100, and the distance between two adjacent first reinforcing ribs 4 gradually increases from the middle portion 1 to the fixing portion 3.

Preferably, the first reinforcing rib 4 may also extend to the edge of the reinforcing plate.

Preferably, the protruding directions of the first reinforcing rib 4 and the folded ring portion 2 are the same. The protruding direction of the first reinforcing rib 4 may be opposite to the protruding direction of the folded ring portion 2.

Preferably, the folded ring portion 2 includes two long axis sides 24 opposite to each other, two short axis sides 25 opposite to each other, and a corner portion 26 connecting the adjacent long axis sides and the short axis sides. The reinforcing rib 4 is located on the corner portion 26.

Preferably, the first reinforcing ribs 4 are evenly and symmetrically distributed on the four corner portions 26, and the number of the first reinforcing ribs 4 provided at each corner portion 26 is equal and symmetrical about the center of the corner portion. The specific number can be based on the inside and outside corners Size and specific needs adjustment.

Preferably, the other end of the first reinforcing rib 4 may extend to the outer edge 23 of the folding ring portion 2, and the first reinforcing rib 4 may also be symmetrically disposed at the remaining positions of the folding ring portion 2.

There is a certain gap between the ribs provided at the traditional corners and the inner and outer edges of the folded ring portion. The first rib 4 extends from the folded ring portion 2 over the inner edge 21 of the folded ring portion to the middle portion 1 to increase the corner portion Intensity, to improve the intensity difference of the corner portion 26 and the stability and pure sound problems of the sound film 100 during actual use.

In this embodiment, the second ribs 5 and the third ribs 6 are provided on the long axis side 24 and / or the short axis side 25 of the folded ring portion 2. The second reinforcing rib 5 and the third reinforcing rib 6 are both arc-shaped, and the bending direction of the second reinforcing rib 5 is opposite to the bending direction of the third reinforcing rib 6. The second ribs 5 and the third ribs 6 are arranged symmetrically with respect to the middle of the axis. The number and shape of the second reinforcing ribs 5 and the third reinforcing ribs 6 can also be adjusted according to actual needs.

What has been described above are only the embodiments of the present invention, and it should be pointed out that, for those of ordinary skill in the art, improvements can be made without departing from the inventive concept of the present invention, but these are all The protection scope of the utility model.

Claims

A sound film includes a folded ring portion, a fixed portion formed by an outer edge of the folded ring portion extending outward, and a middle portion formed by an inner edge of the folded ring portion extending inward. The folding ring portion is provided with a plurality of first reinforcing ribs, and the first reinforcing rib extends from the folding ring portion over the inner edge of the folding ring portion to the intermediate portion.
The sound film according to claim 1, wherein the first rib is symmetrical about a center of the sound film.
The sound film according to claim 1, wherein a distance between two adjacent first reinforcing ribs gradually increases from the intermediate portion toward the fixed portion.
The sound film according to claim 1, wherein the first reinforcing ribs have the same protruding direction as the folded ring portion.
The sound film according to claim 1, wherein the middle portion is provided with a through hole penetrating therethrough, and the sound film further comprises a reinforcing plate attached to the middle portion and covering the through hole, The first reinforcing rib extends to an edge of the reinforcing plate.
The sound film according to claim 1, wherein the folded ring portion includes two long-axis sides opposite to each other, two short-axis sides opposite to each other, and an adjacent long-axis side and a short-axis side connected to each other. A corner portion, and the first reinforcing rib is located on the corner portion.
The sound film according to claim 6, wherein the number of the first reinforcing ribs in each corner portion is equal and symmetrical about the center of the corner portion.
The sound film according to claim 6, wherein a plurality of second ribs and a third number of ribs equal to the number of the second ribs are provided on a long axis side and / or a short axis side of the folded ring portion. The stiffener, the second stiffener and the third stiffener are both arc-shaped, and the bending direction of the second stiffener is opposite to the bending direction of the third stiffener.
The sound film according to claim 8, wherein the second reinforcing ribs and the third reinforcing ribs are symmetrically disposed with respect to the center of the axial side where the third reinforcing ribs are located.
A loudspeaker, characterized in that the loudspeaker comprises the sound film according to any one of claims 1-9.